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BIBLIOGRAPHY: 
Papers and Records published with respect to the Natural History and 
Physical Features of the North of England. 
MARINE MOLLUSCA, 1889 to 1892. 
THE present instalment has been compiled and edited by 
WM. DENISON ROEBUCK, F.L.S 
Previous instalments of the Bibliography of Mollusca (both 
fresh-water and marine) have appeared as follows :— 
For 1884-5, in ‘ Naturalist,’ May 1886, pp. 144-149. 
» 1886-7, . Aug. 1888, pp. 247-263. 
The records for marine and fresh-water mollusca have hitherto 
been given together, but will henceforth be separated, and the 
present instalment includes notices of records of marine forms for 
four years. 
It ought here to be mentioned that the dates included in the 
Bibliographies of Marine Animals are necessarily regulated by that of 
the appearance of the volumes of the Fauna of Liverpool Bay. 
This course is necessitated by the fact that papers included in the 
Transactions of the Liverpool Biological Society and the Annual 
Reports of the Liverpool Marine Biological Station are always 
reprinted in the volumes on the ‘Fauna.’ The last volume of that 
work appeared in 1892, so that until the next volume appears we 
shall not be able to bring our bibliography of any marine group 
down to any later date. It appears to us questionable whether 
it is wise to thus reprint papers which are just as readily accessible 
in one form as another. 
The counties and vice-counties of which cognizance is taken in 
these references are the following, as named and numbered in the 
Watsonian scheme :— 
53, Lincoln S. ; 54, Lincoln N.; 56, Notts.; 57, Derby; 58, 
Cheshire ; 59, Lancashire S. ; 60, Lancashire W.; 61, York S.E.; 
62, York N. E. ; 63, York S. W.: 64, York Mid W.; 65, York N.W. ; 
66, Durham ; 67, Northumberland S. ; 68, Chevistland : 59, West- 
morland with Furness ; 70, Cumberland ; and 71, Isle of Man 
ANon. [not signed]. Isle of Man. 
Live 1 Marine Biological Committee [at Fleshwick Bay, Isle of Man, 
ak 1889; Pocgand viridis and Helcion p Shrearias found]. Research, 
May 1889, p 
Anon, [not stay: Lanc, S. 
Ram ear 1889. . Southport [July 13th; Baccinum 
undatum amas egg- butts aa t alytilus edu Pte roth Ann. Rep. 
Manch. Micr. Soc., for 1889, publ. 1890, pp. 
June 1895. 
